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480
RESULTS

Media Type
478
texts
2
movies
Topics & Subjects
439
Electric engineering
198
Electronics
179
Mechanical engineering
164
Building
163
Aeronautics
163
Astronautics
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Collection
419
American Libraries
164
The Library of Congress
97
California Digital Library
44
Canadian Libraries
38
Prelinger Library
36
University of Toronto - Gerstein Science Information Centre
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Creator
35
american telephone and telegraph company
16
elektrotechnischer verein Österreichs
14
american technical society
12
steinmetz, charles proteus, 1865-1923
8
houston, edwin j. (edwin james), 1847-1914
8
international correspondence schools
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Language
281
English
163
undetermined
31
German
4
French
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